unbreakable

adj.

打不破的，不易碎的；钢铁；

1. Are they made of unbreakable glass?
   是不会破裂的镜片吗?
2. This new material is virtually unbreakable.
   这种新材料实际上是不碎的。
3. Marriage in the U. S. Is not an unbreakable bond.
   在美国,婚姻不再是一种不可打破的联系。
4. The friendship between our two countries is unbreakable.
   我们两国之间有着牢不可破的友谊。

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